Styrene-butadiene latex modifiers for bridge deck overlay concrete.
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Styrene-butadiene latex modifiers for bridge deck overlay concrete.

Filetype[PDF-4.39 MB]


  • English
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    Details:

    • Creators:
    • Corporate Creators:
      United States. Federal Highway Administration. Office of Research and Development
    • Subject/TRT Terms:
    • Publication/ Report Number:
      FHWA-RD-78-35
    • Resource Type:
      Tech Report
    • Geographical Coverage:
      United States
    • OCLC Number:
      32535
    • Edition:
      Interim report; Oct. 1976-Mar. 1978
    • Corporate Publisher:
      United States. Federal Highway Administration
    • NTL Classification:
      NTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and Structures;NTL-HIGHWAY/ROAD TRANSPORTATION-Construction and Maintenance;NTL-HIGHWAY/ROAD TRANSPORTATION-Design;NTL-HIGHWAY/ROAD TRANSPORTATION-Materials;NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance;
    • Abstract:
      Styrene-butadiene (S/B) latex modified concrete overlays are being used to protect

      new bridge decks from rapid deicer-borne chloride intrusion and also in bridge

      deck rehabilitation efforts. The purposes of this research were to evaluate several

      commercially-available S/B latex modifiers for bridge deck overlay concrete; and to

      develop chemical specifications for the material, a prequa1ification program to

      permit evaluation of other S/B latex modifiers which become available, and a certification

      program to insure the user receives a prequalified product.

      The chemical and physical properties of the latex emulsions were studied (percent

      solids, percent butadiene, particle size, surface tension, viscosity, etc.) and

      the material from each manufacturer was fingerprinted using infrared spectroscopy.

      The physical properties of concrete made with each material were also determined

      (workability, strength-compressive, f1exual and bond, freeze-thaw and scaling resistance,

      and chloride permeability).

      In general, the studies showed,that the following materials exhibit similar

      properties and thus would be expected to perform similarly as bridge deck overlays:

      Modifier A - Dow Chemical Company; Deco-Rez 4776 - General Polymers Corporation;

      Thermoflex 8002 - Reichhold Chemicals, Inc.; and Arco Dy1ex 1186 - Arco Polymers, Inc.

      The prequalification procedures given in the report are suggested for use in

      evaluating other S/B latex emulsions offered by industry. The certification procedures

      are suggested for use to insure that each production batch of emulsion is

      similar to an emulsion which was prequalified.

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